EET 270 Safety

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EET 270 Safety
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First Goal

• What is the first goal of this Lab?

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Answer

• To get you out of here without injury!

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Second Goal

• Learn Motor Controls

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Lab PPE

• You must wear safety glasses at all times during
  lab or while working on trainers

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Trainers- Dangers

• Electrical hazard
• Lifting Hazard
• Drop Hazard
• Rolling Hazard
• Escape Hazard (snap, crackle, run)

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Electrical Hazard

• High Voltage 120/208 VRMS
• Arch/ Flash
• Electrocution

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Electrical Hazard prevention

• Trainers MUST BE UNPLUGGED while building the
  circuit
• All troubleshooting will be done while trainer is
  unplugged (Cold)

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Power Up-Sequence

1. The circuit MOST HAVE a Power Indicator and
   E-Stop Circuit
2. Check Circuit for Shorts
3. Have circuit checked by Instructor
4. Notify those nearby before plugging in
5. Identify/clear your escape route

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Power Up- Part 2

• 6) Put Hand on Man Power Switch
• 7) Turn away and warn others
• 8) Turn on power
• 9) Place finger on start switch
• 10) Turn away and warn others
• 11) Press Start

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If Something goes wrong

• Play it Safe!
• Remove power
• Power switch
• Power Plug
• Lab Power

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If a Fuse is blow

• Do not reset a circuit breaker or replace a fuse
  unless you think you understand why it blew in
  the first place!

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Measuring Voltage

• Use one-Hand Method
• Voltage is measured across a Component

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Sketch in the Volt Meter to measure VR1
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Measuring Current

• Current Flows Through a device
• 1) Amp-Clamp
• 2) In-Line Measurement
• Hard-Wired Meter
• Break Then Make

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Sketch in the Amp-Meter to measure IR1
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Snow Policy

• Check my office phone OGM
• Check BCTC Website
• E-mail me if you will not be able to make it